Finding the Fourth Proportional to 121,999,929.18, 168,217,663.74 and 91,006,290.06
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Solution
The fourth proportional to 121,999,929.18, 168,217,663.74 and 91,006,290.06 is: 125,482,576.94
Step by Step Solution
- Step 1: Write the proportion equation
121,999,929.18 : 168,217,663.74 = 91,006,290.06 : x - Step 2: Convert to fraction form
121,999,929.18/168,217,663.74 = 91,006,290.06/x - Step 3: Cross multiply
121,999,929.18x = 168,217,663.74 × 91,006,290.06 - Step 4: Simplify right side
121,999,929.18x = 15,308,865,499,537,986 - Step 5: Solve for x
x = 15,308,865,499,537,986/121,999,929.18 - Step 6: Final answer
x = 125,482,576.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.